JPH06219621A - Cutting device of material fed successively - Google Patents

Abstract

PURPOSE: To improve a cutting device for achieving high format variability while maintaining cutting estimation or the rapid traverse operation of a nipping system. CONSTITUTION: In the cutting device of continuously supplied materials, carriage on a carrier face by a driven system is operated at the upper part and lower part of the carrier face, and sections cut from continuously supplied materials are deflected in a short time by a revolving breaking member extending across the whole width of the sections and decelerated. In this device, a first driving means 3 drives cyclic systems 11 and 13 to be operated independently of the processing machine in the front stage, and an independently controllable second driving means 4 is linked with non-cyclic systems 7, 8, 9, and 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the fact that a driven system conveys a material on a conveying surface above and below the conveying surface, and a signature cut from continuously supplied material extends over the entire width of the signature. The present invention relates to a cutting device for continuously supplied material, which is deflected for a short time by a circulating braking member and is decelerated.

[0002]

2. Description of the Related Art From the prior art, there is known a paper discharge device for discharging sheets from a cutting machine (European Patent No. 0333).
986B1). In order to convey and brake the sheet, a belt guide member is arranged through which several parallel belt rows pass side by side. Also, the upper and lower belt guide members each consist of one slow belt guide member and one fast belt guide member. By virtue of the change of the guide, the set of sheets to be braked gradually departs from the contact with the fast belt guide initially and, in parallel thereto, comes into stronger contact with the slower orbiting belt guide. The modification of the guides is effected by the twisting of the cams, which also influence the belt guides. The disadvantage of this device is the large number of looping belts and the need to re-tension these belts.

German Patent Publication No. 4020398C2 discloses a device for stacking and ejecting sheets cut from a material web by means of a cutting machine.

In this apparatus, the speed of the sheet to be conveyed is specified by the speed of the conveying roller which cooperates with the lower conveying roller. Thereby, the rotation speed of the braking shaft that revolves above the transport surface is also fixed. Releasing the drive means from the connection with the transport roller and the transport roller from the connection with the braking shaft is not disclosed. Adapting to the various formats to be processed is difficult to implement.

[0005]

SUMMARY OF THE INVENTION The disadvantages of the prior art outlined above are eliminated by the present invention.

It is an object of the present invention to improve a cutting device such that high format variability is achieved while maintaining cutting register and fast-forwarding of nipping systems.

[0007]

In order to achieve the above object, in the cutting apparatus of the present invention, the first driving means drives a periodic system which is operated independently of the processing machine of the preceding stage,
A second, independently controllable drive is associated with the aperiodic system.

By using independent drive motors for the periodic system and the aperiodic system, their interconnections can be released and in this way absolute format variability of the cutting device is achieved. . Therefore, the use of the cutting device according to the invention is not limited to fixed formats, but can be adjusted for variable formats. Thanks to the drive means, which can be controlled independently of each other, the belt adjusting gear and the register roller can be completely eliminated. Furthermore, by correspondingly operating the drive means of the aperiodic system, the rapid traverse of this system can be controlled independently of the preceding processing machine. By doing this, the web tension can be adjusted more easily. In order to carry out multiple cutting, the first drive means operating the periodic system are correspondingly driven at double or triple speed.

The periodic system includes a cutting member and a deflecting member, and the aperiodic system includes a material transfer means. Since these drive means are separated from each other,
The cutting operation and the material web transport can be separated from each other. This provides the basic premise for controlling the cutting and transport functions independently.

In the idea underlying the further construction of the invention, the first drive means for the cutting member and the deflecting member are controlled in synchronization with the preceding processing machine via a tachometer. ing. Furthermore, the cutting member is formed as a rotating cutting cylinder. Furthermore, the cutting cylinder can swivel around the bearing location on the drive side. This makes it possible to maintain a vertically rotating cutting line, for example when changing the format such that the speed of the web is reduced and the rotational speed of the cutting cylinder is higher than the web of material passing through. For this purpose, according to a further development of the invention, the bearing of the cutting cylinder facing the swivel center point is provided with a bearing stand which can be moved by an adjusting element. The movement of the bearing base is carried out by releasing the bearing clamp at this point. In this case, the travel distance of the cutting cylinder bearing can be read on a scale or the turning movement of the cutting cylinder can be started by a servomotor driving the adjusting element. The use of a servomotor has the additional advantage that the adjustment value to be adjusted can be stored and can be recalled regardless of the manufacturing conditions.

Further configurations of the subject of the invention are described in the other dependent claims. The suction belt can be driven by an independently controllable second drive means that acts on the reduction gear unit via the transmission belt. By installing a harmonic drive or PIV transmission in the reduction gearbox, the orbital speed of the suction belt can be adjusted once again independently of the rotational speed of other devices for material transport. Since the material conveying means is associated with an independently controllable drive means, it is possible to dispense with the compound miter gears and the lap gears and fine gears to adjust the web tension. Therefore, the tension of the web can be delicately changed by adjusting the fast feed or the slow feed. With this fine adjustment, the cutting error that may occur when the rotational speed of the cutting cylinder is higher can be corrected via the associated driving means. The cutting register can be adjusted by the phase shift during one revolution by the drive means of the cutting member and the deflecting member in conjunction with the periodic system.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a side view of the cutting device. 2 on the bracket 5 (Konsolen) on the side 1 of the cutting device
The two drive means 3 and 4 are fixed. Drive means 3
Is provided for systems that operate cyclically,
The driving means 4 drives the material conveying means. The space designated by the reference numeral 2 is provided below the side part 1 for sheet ejection after cutting and braking work. Only one side 1 is shown for ease of viewing.

The belt 16 circulates around the cutting cylinder 13 starting from the drive means 3 for the cyclically operating system. The cutting cylinder 13 is provided on its outer circumference with one or more cutting blades extending in the axial direction, by which the individual signatures are cut from the continuously fed material web. Another horizontal belt extends from the cutting cylinder 13 to the deflection roller 11. The deflecting roller 11 is provided with a deflecting cam and acts so as to deflect (Umlenken) the signature that has been cut and sent. Each belt is stretched by a tension roller 6 so that there is no slack.

Introduction Nipping Roller 7 (Einlaufzugwalz
The belt 14 acting on e) starts from the drive means 4 for the material conveying means and is tensioned by the tension roller 6. The belt 15 traveling in a substantially horizontal direction drives the intermediate nipping roller 8 and then the inter-vehicle portion of the belt 15 drives the reduction gear device 12.

Further, the inter-vehicle portion of the belt 15 is hooked on the belt pulley of the nipping roller 9. From here, the inter-vehicle portion passes through another belt pulley, is stretched by the tension roller 6, and returns to the drive transmission portion of the introduction nipping roller 7 again. The belt roller 10 is a reduction gear device 12
Is driven through another belt stretched around the tension roller 6. The belt roller 10 is inserted in a suction box (Saugkasten) not shown here in detail.

The drive arrangement of the cutting device selected here makes it possible to drive the periodic deflecting member and the cutting member relative to the material conveying means or vice versa. Thereby, for a constant drive speed of the periodic system, the fast or slow feed of the material web can be adjusted by changing the speed of the material conveying means. Any signature format can be created by the cutting device according to the invention. This is because the rotational speed of the cyclically driven system does not depend on the speed of passage of the material web.

Therefore, the location where the signature is separated from the web can be arbitrarily selected. This is because both the speed of rotation of the cutting cylinder and the speed of passage of the material web can be influenced by one drive means each. Therefore, the cutting device of the present invention enables various types of formats to be created without the need to change members.

FIG. 2 shows a plan view of the arrangement of the material conveying means, the cutting member and the braking member which can be rotated in the plane of the drawing. Cutting cylinder 1 driven by belt 16
3 comprises a shaft supported so as not to rotate, and a cylindrical body 17 is rotatably supported on this shaft. The deflection roller 11 is driven by another drive system. Both sides of the deflection roller 11 are supported by the side portion 1, and a deflection cam (illustrated schematically) is attached to the outer periphery thereof. After all side 1
The driving means 4 fixed to the belt 1 by the bracket 5 is
The material conveying device is driven via 4, 15.

A slight tension roller 6 tensions the belt, receives a spring action, and is fixed to the side portion 1. In addition to the introduction nipping roller 7 and the intermediate nipping roller 8, the nipping roller 9 supported immediately before the suction box 18 also includes the driving means 4 and the belt 14.
And 15 driven. Drive transmission to the suction box 18 that functions as a braking member is performed by the belt 15
It is carried out starting from. The reduction gear unit 12 also has a belt 15
Is driven by.

An independent drive system extends from the reduction gear unit 12 to the first suction box roller 10.
The two suction box rollers 19 and 20 are also driven by a slight suction belt 21 that revolves around the driven suction box roller 10. Since the drive of the suction belt 21, and hence the rotation speed thereof, depends on the reduction gear device 12, the reduction gear device 12 connected to a harmonic drive or a PIV transmission device or the like.
Can be adjusted relative to other material conveying means, namely rollers 7, 8 and 9. As a result, the braking member, that is, the suction box 18 and the suction belt 21 can be additionally adjusted, and the brush cylinder 19 serving as a braking member
Also, the braking effect on the cutting cylinder 13, which is a cutting member, can be changed. This can be a good idea if the thickness of the substrate is special. Since the two drive means 3 and 4 are flanged from the inside to the side part 1, the adjusting surface which loads the cutting device of the invention can be lowered.

In FIG. 3, a movable bearing on the operating side of the cutting cylinder 13 is shown. Cutting-side cylinder bearing 23 on the operating side
Can move this bearing point relative to the opposite bearing point by an offset amount 33 (Schraenkweg). The offset amount 33 represents the deflection of the symmetry line 43 of the cutting cylinder 13 in the cutting cylinder bearing 23. Cutting cylinder 1
Conical bodies 26 are attached to the journals on both sides of 3. This cone secures the inner ring of the rolling bearing 25 with a nut 28 secured by a stop plate 27. The pitch of the cone 26 defines the rolling bearing 25 in the axial direction. Facing the outer ring of the rolling bearing 25, two adjusting elements 29, here formed as adjusting screws, are mounted. Instead of the manually operated adjusting screw, a servo motor may be provided to move the bearing 23 of the cutting cylinder 13 in the horizontal direction.

An opening 30 is provided in the side portion 1 for moving the cutting cylinder bearing 23. Facing the adjusting element 29, one opening 3 is provided in each opening 30.
1 or 32 is provided. The adjusting elements 29 are in contact with these stoppers. When the cutting cylinder 13 is deflected horizontally, one of the adjusting elements 29 is moved to one side of the bearing mount 35, for example in the direction in which a gap is created between the stopper 32 and the adjusting element 29. When the adjusting element 29 on the opposite side is twisted with respect to the stopper 31, the bearing base 35 moves in the direction of the stopper 32 by the offset amount 33, so that the gap between the stopper 32 and the adjusting element 29 closes, and the cutting cylinder bearing. 23 is fixed again on both sides. After that, bearing stand 3
5 is again fixed to the side part 1.

4 and 5 are plan views of the operating side of the cutting cylinder bearing. The bearing mount 35, which can be moved in the opening 30 by twisting the adjusting element 29, is guided in an elongated hole 36, after which the offset amount 33 is precisely adjusted and then the screw can be tightened and fixed in the working position. Furthermore, the bearing base 35 can be stopped by a pin 37 penetrating the side part 1 (see FIG. 5). For this purpose, two pinning points are provided in the upper and lower areas of the bearing mount 35. At the upper pinning location, the bearing of the cutting cylinder 13 can be positioned exactly perpendicular to the side 1. This can be regarded as a central adjustment of the cutting cylinder 13 performed at the factory during assembly.

The pinning points provided in the lower area of the bearing mount 35 are used, for example, to adjust the offset amount 33 corresponding to the length of the frequently cut format. That is, the angular displacement of the cutting cylinder 23 with respect to the side portion 1 is determined corresponding to this standard offset amount. This can further reduce the preparation time. Cutting cylinder bearing 2
Precise adjustment of 3 can be limited to some special formats that may be rarely produced.

As is also apparent from FIG. 4, the adjusting element 29 is screwed onto the bearing mount 35 and is in contact with the stoppers 31 and 32 which face the adjusting element 29, respectively. During production, the load of the cutting cylinder bearing 23 is absorbed by the screws provided in the elongated holes 34 of the bearing mount 35. By means of the movable operating-side cutting cylinder bearing 23 according to the invention,
During cutting, it is possible to maintain the vertical cutting line under the peripheral speed of the cutting cylinder 13 which is higher than the paper speed.

Finally, FIG. 6 shows a plan view of the drive side bearing of the cutting cylinder 13. The journal 38 of the cutting cylinder 13 is the cone 2
Have six. Rolling bearing 25 is placed on top of cone 26.
And is fixed by a nut 28 and a stop plate 27. Two belt pulleys 3 are provided on the extension of the journal 38.
9 and 40 are arranged which introduce a rotary movement into the cutting cylinder 13 by means of the belt 16 and the adjusting spring 41. The drive is further transmitted to the brush cylinder 11 (see FIG. 2) by the belt pulley 39. If necessary, the brush cylinder 11 is lubricated through a lubricant supply pipe to the rolling bearing 25, which is not shown in detail. The deflection of the cutting cylinder bearing 23 facing this bearing is implied by the dashed line extending parallel to the line of symmetry 42 of the cutting cylinder 13.

[Brief description of drawings]

FIG. 1 is a side view of a cutting device.

FIG. 2 is a plan view of an arrangement configuration of a material conveying unit, a cutting member, and a braking member that can be rotated on the illustrated surface.

FIG. 3 is a movable cutting cylinder bearing on the operating side.

FIG. 4 is a side view of the cutting cylinder bearing on the operating side.

FIG. 5 is a cross-sectional view showing fixing of the bearing stand by a pin.

FIG. 6 is a plan view of a cutting cylinder bearing on the drive side.

[Explanation of symbols]

 1 Side 2 Sheet Discharge 3 Driving Means (Periodic System) 4 Driving Means (Conveying System) 5 Blanket 6 Tension Roller 7 Introduction Nipping Roller 8 Intermediate Nipping Roller 9 Nipping Roller 10, 19, 20 Suction Box Roller 11 Brush Cylinder 12 Reduction gear device 13 Cutting cylinder 14, 15 Belt (conveying system) 16 Belt (periodic system) 17 Cylindrical body 18 Suction box 21 Suction belt 22 Cutting cylinder bearing (AS) 23 Cutting cylinder bearing (BS) 25 Roller bearing 26 Conical body 27 Stop plate 28 Nut 29 Adjusting element 30 Opening 31 Stopper 33 Offset amount 34 Cap 35 Bearing base 36 Elongated hole 37 Pin 38 Journal 39, 40 Belt pulley 41 Adjusting screw 42 Symmetrical line

 ─────────────────────────────────────────────────── ————————————————————————————————————————————————————————————————————————— Inventor Peter Gunperlink, Germany 69245 Bamental Amer Wiesenweg 10

Claims (12)

[Claims] Claims: 1. The driven system conveys on a conveying surface above and below the conveying surface, and a signature cut from a continuously fed material is provided by a circulatory braking member extending the full width of the signature. In a continuously fed material cutting device which is deflected and decelerated for a short period of time, a periodic system (11, 13) in which a first drive means (3) is operated independently of a preceding processing machine. A cutting device, characterized in that a second drive means (4) for driving the, and independently controllable is associated with the aperiodic system (7, 8, 9, 10). 2. Cutting device according to claim 1, wherein the periodic system comprises a cutting member (13) and a deflecting member (11). 3. A material transport means (7,
8. The cutting device according to claim 1, which includes 8, 9, 10). 4. A cutting member (13) and a deflecting member (1).
The first drive means (3) for 1) is controlled synchronously with the preceding processing machine via a tachometer.
The cutting device described in. 5. Cutting device according to claim 2, wherein the cutting member (13) is formed as a rotating cutting cylinder. 6. Cutting device according to claim 5, characterized in that the cutting cylinder (13) can be swiveled around a bearing (23). 7. The bearing (23) facing the turning center point,
3. Cutting device according to claim 2, wherein a bearing mount (35) is arranged which can be moved by an adjusting element (29). 8. The material conveying means comprises an introduction nipping roller (7), an intermediate nipping roller (8) and another one.
Cutting device according to claim 3, comprising one nipping roller (9). 9. Cutting device according to claim 1, characterized in that the independently controllable drive means (4) act on the reduction gear unit (12) via a horizontally moving bell and the drive means (15). 10. Cutting device according to claim 9, wherein the reduction gear unit (12) is connected to a belt roller (10) which drives a suction belt (21) in the suction box (18). 11. Cutting device according to any one of claims 1, 3 and 8, wherein the controllable drive means (4) is capable of adjusting the rapid traverse of the material conveying means (7, 8, 9, 10). 12. The cutting error detected by the sensor can be corrected by twisting the cutting cylinder (13).
The cutting device according to any one of 2, 4, and 5.